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The combination of Bit-Interleaved Coded Modulation and Orthogonal Frequency-Division Multiplexing (BIC-OFDM) forms a powerful coded modulation scheme for transmission over wideband channels. Recently, Moon and Cox presented a new power allocation method to minimize the Bit-Error Rate (BER) of BIC-OFDM. It requires the solution of a convex optimization problem and is limited to (complex) binary transmission. Motivated by their work, in this paper the authors present an alternative power allocation method, which has the advantages of being a linear program and applicable to arbitrary signal constellations. Their approach relies on a BER approximation which becomes tight for asymptotically large signal-to-noise ratios.
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